Trap is an investigative thriller about national anchor Kang Woo Hyun. He goes on a trip with his family and gets caught in a trap where he faces the situation of a lifetime.

Because Kang Woo Hyun is Korea's national anchor, he has earned the trust of the country. He appears to have everything, as he is respected by society, has a happy family, and even received love calls from political circles. However, he suddenly experiences a tragedy, losing everything in one fell sweep.